The Magic Behind The Windows Phone Keyboard
"Fat fingers and compact smartphone screens just aren't a good match. Combine a few key misses with a well-meaning auto-correction feature and it's no wonder that "I ate the hummus" turns into "I ate the humans." But Windows Phone 7 users find that their keyboards seem to have a better knack for knowing what they intend to type-or even what they intend to say."
If you have used a Windows Phone 7 device, you will undoubtedly be amazed by the on screen keyboard and its knack of guessing what you want to type. Douglas Gantenbein has posted an article about their concepts and thought process that ultimately resulted in the Windows Phone 7 keyboard.